Add regression test for ticket #652.

1 files changed, 34 insertions, 0 deletions

diff --git a/numpy/linalg/tests/test_regression.py b/numpy/linalg/tests/test_regression.py
new file mode 100644
index 000000000..4e2295539
--- /dev/null
+++ b/numpy/linalg/tests/test_regression.py
@@ -0,0 +1,34 @@
+""" Test functions for linalg module
+"""
+
+from numpy.testing import *
+set_package_path()
+from numpy import linalg, arange, float64
+restore_path()
+
+rlevel = 1
+
+class TestRegression(NumpyTestCase):
+    def test_eig_build(self, level = rlevel):
+        """Ticket #652"""
+        rva = [1.03221168e+02 +0.j, 
+               -1.91843603e+01 +0.j,
+               -6.04004526e-01+15.84422474j, 
+               -6.04004526e-01-15.84422474j,
+               -1.13692929e+01 +0.j,
+               -6.57612485e-01+10.41755503j,
+               -6.57612485e-01-10.41755503j,
+               1.82126812e+01 +0.j,
+               1.06011014e+01 +0.j ,
+               7.80732773e+00 +0.j ,
+               -7.65390898e-01 +0.j,
+               1.51971555e-15 +0.j ,
+               -1.51308713e-15 +0.j]        
+        a = arange(13*13, dtype = float64)
+        a.shape = (13,13)
+        a = a%17
+        va, ve = linalg.eig(a)
+        assert_array_almost_equal(va, rva)
+
+if __name__ == '__main__':
+    NumpyTest().run()